Method of simulating a room and/or sound impression

Details Method of simulating a room and/or sound impression Method of simulating a room and/or sound impression

1994-08-19

1996-08-06

Brinich, Stephen

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 61, H03G 300, H04S 100

Patent

active

055442498

ABSTRACT:
A method of simulating a room impression and/or sound impression occurring at a representative listening location in a room with monophonic, stereophonic or multichannel reproduction includes selecting a room whose sound is to be simulated. A location of a representative listening location is then determined. Subsequently, the corresponding room impulse response at least for one channel is determined at the representative listening location. A threshold value which exceeds over at least a portion of the duration of the determined room impulse response is determined for the determined room impulse response. By comparing the determined room impulse response with the threshold value, a reduced room impulse response is produced which within the portion of the duration of the determined room impulse response only includes those contents of the determined room impulse response in which a momentary amplitude is above the threshold value. The reduced impulse response to the value zero for those contents of the determined room impulse response whose momentary amplitude is below the threshold value is set. Outside of the portion of the duration of the determined room impulse response, the reduced room impulse response contains the determined room impulse response in unchanged form.

REFERENCES:
patent: 5123050 (1992-06-01), Serikawa et al.
patent: 5131051 (1992-06-01), Kishinaga et al.
patent: 5142586 (1992-08-01), Berkhout
patent: 5201005 (1993-04-01), Matsushita et al.
patent: 5261005 (1993-11-01), Masayuki
patent: 5305386 (1994-04-01), Yamato
patent: 5381482 (1995-01-01), Matsumoto et al.

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